This is not using correct style whatsoever. Don't use pinkys and only use LH thumb. When I was in school the typing teacher tried to teach me that home-row bullshit. I was like how about you type half my speed and then you can teach me?

Having a good keyboard helps (Logitech diNovo Edge). Also, most people sit totally wrong for speed typing. Keyboard has to be below your elbows and your arms and writs should be totally loose and NOT resting on a palm rest.